[PATCH] D113733: [llvm-objdump/mac] Add support for new load commands

Nico Weber via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Aug 15 07:14:44 PDT 2022


thakis added inline comments.


================
Comment at: llvm/test/tools/llvm-objdump/MachO/chained-fixups.yaml:79
+    flags:           0
+  - cmd:             LC_DYLD_CHAINED_FIXUPS
+    cmdsize:         16
----------------
thakis wrote:
> How did you create this file? It looks like this load command contains dummy data:
> 
> ```
>  % otool -chained_fixups /Users/thakis/src/llvm-project/out/gn/obj/llvm/test/tools/llvm-objdump/MachO/Output/chained-fixups.yaml.tmp
> /Users/thakis/src/llvm-project/out/gn/obj/llvm/test/tools/llvm-objdump/MachO/Output/chained-fixups.yaml.tmp:
> chained fixups header (LC_DYLD_CHAINED_FIXUPS)
>   fixups_version = 0
>   starts_offset  = 0
>   imports_offset = 0
>   symbols_offset = 0
>   imports_count  = 0
>   imports_format = 0
>   symbols_format = 0
> chained starts in image
>   seg_count = 0
> ```
> 
> (I noticed 'cause I'm trying to implement `llvm-otool -chained_fixups`, and the validation code added in D113630 complains that this chained fixups load command contains dummy data. So I'd like to regenerate the test input with valid data, ideally using the same command you used.
> 
> Generally, it's imho a good idea to put in a comment how a file like this was generated.)
(The invalid data is because this uses `LinkEditData` instead of `__LINKEDIT`, and the former doesn't currently contain the chained fixups information.)


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D113733/new/

https://reviews.llvm.org/D113733



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